Tagged Questions

TCP stands for Transmission Control Protocol and is one of the core protocols of the Internet Protocol Suite. TCP complements the Internet Protocol (IP), and therefore the entire suite is commonly referred to as TCP/IP.

I have a software (HP BSM) installed in a Windows server 2008 R2 Std
This software needs to "talk" through a specific list of TCP ports and "listen" through other TCP ports.
How can I know/check if ...

There are some flags in TCP. I already understand what other flag names come from, such as SYN stands for synchronization. I also know that FIN is used to close a connection. What I don't understand ...

I want to use TCP for DNS, to bypass my ISP's slow and broken DNS servers. I'm not using (and don't want to use) a proxy.
Note: I want to use DNS over TCP because if I use it over udp, no matter what ...

I have users that previously used FTP for file transfers across high latency paths to their local server. They have switched to HTTP for these transfers (not by choice) and file transfer perforamance ...

I'm currently trying to set up a VPN on my server to connect to from my Laptop.
The server is a command-line ubuntu running on a x64 machine. The Laptop runs x64 Windows 7.
The VPN itself is already ...

What is the easiest way (as easy as possible) to make a web server that will check a string received from client and respond with another string? How to do it from the very beginning to the very end? ...

I have a pcap file which contains tcp traces.
I was wondering if there's a way to split these traces in order to maintain tcp flows, but also filtering the traffic on a src ip basis.
For example, if ...

I have been using psping for measuring bandwith statistics on localhost on different computers: laptops, home computers and servers. All of them get to between 100 and 200 MB/s but my PowerPc at work ...

Say two hosts, A and B, both attempt to start a connection with each other, but the SYN from A gets to B before B's SYN arrives at A.
My answer is that A would sent SYN ACK and would ignore the SYN ...

I want to test if my network supports EDNS0. It means that if the record is bigger than 512byte, the DNS will be over TCP. It will ne truncated at firts using UDP ,the it willbe over tcp.
I'm using ...

It is my understanding that when you open a tcp connection to send data the tcp layer on the receiving end holds on to all the packet until the transmission is complete, then sends all the data up to ...

Every time I try to filter to just show a specific IP address, I get an error indicating that it is "not an interface or a field." I have no idea what that means. Furthermore, I don’t really see any ...

I need to know if it's possible to compare and test how fast is an IP (ie: any web or game server) relative to my location (in terms of network latency), even if they have disabled ICMP/Ping requests ...

Say I have two TCP servers A and B. A is an ipv4-only server listening on 127.0.0.1:10000. B is an ipv6-only server listening on ::1:10000. Can I start these on the same machine? That is, how are IP ...

I'm trying to troubleshoot my home internet connection, which often hangs on large downloads. I believe I have been able to duplicate the problem between my home computer and an Amazon EC2 instance ...

I am using Windows OS on an amazon cloud AWS with static public IP.
On this machine I need to set up a TCP server to listen on port 2204 for raw data that will arrive from a GPS base station over TCP ...

The Windows 7 Firewall is running with default options to allow outbound connections and block incoming connections. I have a process trying to connect regularly from within my local network, which is ...

My school has a firewall which limits most outgoing ports. There're only TCP/80, TCP/443, TCP/21 allowed. Is there's a way to find out all the outgoing port allowed by the firewall?
My current idea: ...

I have a basic understanding of how HTTP works. I understand the client (web browser) makes a request and server responds back to the request. However, the thing I don't understand is how does a web ...

I'm sorry if this is a really stupid question; my networking knowledge is pretty sparse.
So, a user makes a HTTP request to some address. That request comes from an address on a local subnet, but the ...

I have router TP Link n900 and I cannot connect to my admin panel of the router, I just bought it, I have internet when I am connected with cabel, but cannot open the router. My connection is :
PC -> ...